Master Cutoff Switch

[MR DERBY CITY]

Thanks for the heads up Travis....that’s some valuable info right there....

[cmracing]

It would only make sense for a push-pull type of lever to turn the power off when pushed, as in backing the car into a wall. But, common sense has not been too common for many, many years........

Any car I work on has that switch properly marked, I never want anything to happen to one of my friends or customers, as well as myself and family members driving one of our cars!

[CMcAllister]

Rulebook states "push" must be the off action on a push-pull type mechanism. And most of the levers on switches I'm aware of go CCW to turn off if it's mounted that way. Also states it must be marked.

I'm a fan of having some type of secondary cable or other way of operating the master from the driver's seat, for both safety and convenience.

[Larry Hill]

I have one in the car next to me that kills everything, just in case!

[FireSale]

Originally Posted by Larry Hill

I have one in the car next to me that kills everything, just in case!

Ditto.

[Keith 944]

Originally Posted by FireSale

Ditto.

This Might be part of the problem, you get in an accident, shut your power off, first guy there thinks he’s turning it off and has turned it back on...
It should also be mandatory if you have one inside the car it moves the lever outside the car also, which I’m sure most people already do

[Larry Hill]

The disconnect inside the car will not be affected by the outside disconnect being in the on position. The outside disconnect feeds the inside disconnect.














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[FireSale]

Originally Posted by Keith 944

This Might be part of the problem, you get in an accident, shut your power off, first guy there thinks he’s turning it off and has turned it back on...
It should also be mandatory if you have one inside the car it moves the lever outside the car also, which I’m sure most people already do

When I had a push-pull system, I had a cable running from the trunk switch to a lever in the cockpit, Pushing the lever physically moved the rod on the back bumper. Since emergency persons are trained to move that switch, they could possibly turn the car back on. My current setup is a rotary switch on the back deck that cuts all power between the battery and the car. The power feed into the cabin is through a continuous duty Cole Hearse solenoid connected to an aircraft switch on the console to energize it. If something goes haywire I can slap that switch and kill all the accessories and ignition power. There is still one hot wire in the cabin (the battery cable) but the juice isn't going anywhere. It's a quick way of shutting off the ignition and fuel pump without flipping multiple switches.